I shall be running the sub4 stafford 20 on 14th march, which starts at the stafford university,this is a good test run for any marathon, as it includes hills.3 laps on the curcuit so if you do feel its to much you can pull in at the pits early-never done it yet .Address ST18 OAD,check it out .Perfect for the lucky london marathon runner,but I will be at Blackpool this year.
good luck on you runs.wings of fire.
